APA

Raven P. H., .Biology of Plants. New York: W.HFreeman and company.

Chicago

Raven Peter H, .Biology of Plants. New York: W.HFreeman and company.

Harvard

Raven P. H., .Biology of Plants. New York: W.HFreeman and company.

MLA

Raven Peter H, .New York: W.HFreeman and company. .